Ground Motion in Kuwait from Regional and Local Earthquakes: Potential Effects on Tall Buildings

Gu, Chen; Prieto, G. A.; Al-Enezi, Abdullah; Al-Jeri, Farah; Al-Qazweeni, Jamal; Kamal, Hasan; Kuleli, Sadi; Mordret, Aurélien; Büyüköztürk, Oral; Toksöz, M. Nafi

doi:10.1007/s00024-018-1943-5

Cited by 16 publications

(6 citation statements)

References 48 publications

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“…The vibrational modes of the Al-Hamra Tower have been determined by ambient noise monitoring at the 80th floor of the building and GPS measurements at the 86th floor. The most prominent modes are North/South with a period of 7.1 sec, East/West 5.7 sec period and a torsional model with 3.1 sec period (Toksöz et al, 2018). Similar mode periods are obtained from both ambient noise monitoring on the 80 th floor and GPS measurements on the 86th floor.…”

Section: Introductionsupporting

confidence: 68%

“…The Mw 7.3 earthquake was recorded by the Kuwait National Seismic Network (KNSN) operated by the Kuwait Institute for Scientific Research (KISR) (Gu et al, 2018). The KNSN consists of six broadband stations (KB, MI, QR, RD, RS and UM) and two short-period stations (AB and SA) (Gu et al, 2017).…”

Section: Seismic Sites and Data Analysismentioning

confidence: 99%

“…The foundation of the tower is supported by 289 reinforced concrete piles, ranging in depth from 22 m to 27 m. There is an extended apron shopping mall which is isolated from the tower. The Tower's response to ground vibrations has been calculated using detailed structural design information and finite element modeling (Al-Qazweeni et al, 2018, Sun andBüyüköztürk, 2018). The building vibration has been measured, with temporary occupations, using one Kinemetrics EpiSensor instrument at the 80th floor of the Al-Hamra Tower.…”

Section: Introductionmentioning

confidence: 99%

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GPS Measured Response of a Tall Building due to a Distant Mw 7.3 Earthquake

Herring

Toksöz

et al. 2018

Seismological Research Letters

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The response of a 413-meter-tall building to the 12 November, 2017, Mw 7.3 earthquake 642km from the building is measured with a GPS receiver located near the top of the building and operating with a 1 Hz sampling rate. Nearby GPS and seismic stations measure the ground motion near the building. The ground motions have amplitudes of ~40 mm while the top of the building moves by up to 160 mm. The building motion continues with levels greater than the noise level of the GPS measurement for about 15 minutes after the earthquake. After the ground motion excitation ends, the building motion decays with a time constant of ~2 minutes and the beat between the two lowest frequency modes of deformation of the building can be seen. There are two large amplitude peaks in the building motion with magnitudes of 120 and 160 mm. The timing of the peaks is consistent with ground excitation in a 8.3-6.5 second period (120-180 mHz) band which covers the 7.25 and 5.81 second periods (138 and 172 mHz frequencies) of the fundamental modes of the building. The ground motions in this band show two large pulses of the excitation which have timing consistent with the large amplitude building signals. The response of the top of the building is amplified by an order magnitude over the ground motions in this band. There is no apparent permanent displacement of the top of the tower.

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Section: Introductionsupporting

confidence: 68%

Section: Seismic Sites and Data Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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GPS Measured Response of a Tall Building due to a Distant Mw 7.3 Earthquake

Herring

Toksöz

et al. 2018

Seismological Research Letters

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“…The Kuwait National Seismic Network (KNSN) records local, regional and global earthquakes that occur in Kuwait and in the Globe. The KNSN has main center at Kuwait Institute of Scienti c Research (KISR) and 8 eld seismic stations distributed all over Kuwait (Abd el-aal et al 2020a; Gu et al 2018). This network has a very great impact in protecting modern urban development in the State of Kuwait.…”

Section: Introductionmentioning

confidence: 99%

Updating seismic hazard models for Kuwait

el-aal

Mostafa

Al-Enezi

et al. 2021

Preprint

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The valuable results from this research are the first and essential step for assessing seismic risk in Kuwait. The increase in the urban development and construction of tall buildings and skyscrapers in Kuwait necessitated an estimate of the seismic risk for creating a unified seismic code for Kuwait. This research comes to make the necessarily step by assessing the seismic hazard and deaggregation in the State of Kuwait. For this purpose, the historical and instrumental seismic catalogs of Kuwait and the active Zagros Seismic Belt were primarily compiled, unifying the magnitudes, removing unnecessary earthquakes (seismicity declustering) and considering the completeness of the catalogs. Multi-seismotectonic models for Kuwait region incorporate earthquake focal mechanisms, seismicity pattern, and structural geological situation have been created to reduce epistemic uncertainty. The recurrence parameters as well as the maximum expected earthquake from each seismic source were fundamentally estimated. Appropriate ground motion attenuation relation within a logic tree formulation was mainly used in creating hazard maps. A state-of-the-art probabilistic approach is used herein to produce hazard maps at return periods of 75, 475, 975 and 2475 years (equivalent to 50%, 10%, 5% and 2%, respectively, probability of exceedance in 50 years) at periods of PGA, 0.1, 1 and 4 seconds. The computations of hazard maps were constructed using spacing grid of 0.2° × 0.2° all over the Kuwait area. Uniform hazard spectrum and deaggregation charts have been adopted for all six governorates of Kuwait. These results with vulnerability index are the main components for estimating the seismic risk of Kuwait.

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“…With rapid urbanization and fast‐growing population, an increasing number of super high‐rise buildings with complex configurations and innovative structural systems have been built in megacities around the world . Although most of the skyscrapers are located in cities with low or moderate seismicity, such as Dubai, Shanghai, Shenzhen, and Hong Kong to name a few, recent studies revealed that long‐period ground motions from distant large‐magnitude earthquakes could cause great impact on the safety and functionality of high‐rise buildings . This is because long‐period ground motions could induce the resonance of high‐rise buildings and cause local damages to key structural components.…”

Section: Introductionmentioning

confidence: 99%

Optimal multi‐type sensor placement for monitoring high‐rise buildings under bidirectional long‐period ground motions

Zhao

2020

Struct Control Health Monit

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Summary Towards a complete and accurate seismic assessment of a super high‐rise building under bidirectional long‐period ground motions, this study proposes an optimal multi‐type sensor placement framework for the best reconstruction of structural responses and ground motions based on a full‐scale 3D finite element (FE) model of the building. The selected locations and types of sensors are capable of not only capturing the coupled bending‐torsional vibration but also providing an unbiased estimation of the unmeasured responses of seismic‐vulnerable components and bidirectional ground motions. A Kalman filtering algorithm‐based data fusion technique is employed to deal with the measurement data from multi‐type sensors. With the target of achieving the best reconstruction, an optimal sensor placement (OSP) configuration, which minimizes the reconstruction error, is achieved through a sequential sensor placement algorithm. To assess the feasibility of the proposed OSP framework and the accuracy of reconstructed responses and ground motions, a numerical study is also performed on the full‐scale 3D FE model of a super high‐rise building. The torsional effects of the building under bidirectional long‐period ground motions are assessed by comparison with the results without considering the torsional effect. The numerical results show that the proposed framework is feasible and the reconstructed responses and ground motions are accurate and that the torsional effects cannot be neglected in the seismic assessment of the building.

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Ground Motion in Kuwait from Regional and Local Earthquakes: Potential Effects on Tall Buildings

Cited by 16 publications

References 48 publications

GPS Measured Response of a Tall Building due to a Distant Mw 7.3 Earthquake

GPS Measured Response of a Tall Building due to a Distant Mw 7.3 Earthquake

Updating seismic hazard models for Kuwait

Optimal multi‐type sensor placement for monitoring high‐rise buildings under bidirectional long‐period ground motions

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